Dahlia plant named ‘DATREOGTYVE’

ABSTRACT

A new distinct cultivar of  Dahlia  plant named ‘DATREOGTYVE’, characterized by its upright to slightly spreading shape, with stiff and strong lateral stems and thick compound leaves, with up to 15 leaflets. The color of the mature leaves are RHS Yellow-green 147A (upper side) and RHS Grayed-green 191 A (Underside). Compound leaves are 10-28 cm in length, and 10-25 cm in width. Only a few single leaves are present near the peduncle. Composite flower heads are 9-11 cm in diameter, with a large number of ray florets (about 150 to 180). The ray florets are RHS White 155C on inner third near base, and RHS Violet 84B on the outer two thirds.

Latin name of the genus and species of the claimed plant: Dahlia Cav.

Variety denomination: ‘DATREOGTYVE’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Dahliaplant, botanically known as Dahlia Cav., of the Compositae (Asteraceae)family, hereinafter referred to by the cultivar name ‘DATREOGTYVE’.

The new Dahlia cultivar is a product of a planned breeding programconducted by the inventor, Rune Nielsen, in Stige, Denmark. Theobjective of the breeding program is to develop a new Dahlia cultivarwith an upright, strong and healthy growth habit, suitable for largescale container production and with good garden performance; fullydouble flowers creating globular-shaped flower head (composite flowerheads with many ray florets) with an attractive inflorescence color.

The new Dahlia cultivar originated from a cross, made in a controlledbreeding program by the inventor in 2008, in Stige, Denmark. The femaleor seed parent is a Red-purple Dahlia designated 5876G (Breeder'sReference; unpatented). The male or pollen parent is a lightPurple-violet Dahlia designated 5187C (Breeder's Reference; unpatented).

Asexual reproduction of the new Dahlia cultivar by terminal cuttings wasfirst performed in September, 2009 in Stige, Denmark, and hasdemonstrated that the combination of characteristics as herein disclosedfor the new cultivar are firmly fixed and retained through successivegenerations of asexual reproduction. The new cultivar reproduces true totype.

BRIEF SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and are determined tobe unique characteristics of ‘DATREOGTYVE’, which in combinationdistinguish this Dahlia as a new and distinct cultivar:

-   -   1. Cultivar with upright to slightly spreading shape;    -   2. Cultivar with stiff and strong lateral stems and thick        compound leaves, with up to 15 leaflets. Color of mature leaves        RHS 147A (upper side) RHS 191A (Underside);    -   3. Compound leaves with 2 to 15 leaflets, 10-28 cm in length,        and 10-25 cm in width. Only a few single leaves present near        peduncle;    -   4. Composite flower heads, 9-11 cm in diameter, with a large        number of ray florets (about 150 to 180); and    -   5. Ray florets are RHS White 155C on inner third near base, and        RHS Violet 84B on the outer two thirds.

Plants of the new Dahlia ‘DATREOGTYVE’ differ from the parent plants inthe traits described in Table 1.

(The male and female parents are no longer available for a detailedevaluation. The evaluation is therefore based on historical data.)

TABLE 1 Comparison with Parental Varieties Comparison Comparison NewCultivar Cultivar Cultivar ‘DATREOGTYVE’ 5876G 5187C Trait 6653E Femaleparent Male parent Plant Size Height: About 40-50 cm. About 25-35 cm.About 50-55 cm. Diameter: About 45-50 cm. About 30-40 cm. About 45-50cm. Overall Plant Upright to Upright to Upright to Shape: spreading withbasal spreading with spreading with branching. basal branching. basalbranching. Inflorescences in Inflorescences in Inflorescences incomposite heads. composite heads. composite heads. Basal branches withflowers Length: 35-45 cm. 20-30 cm. 45-50 cm. Diameter: 12-16 mm 10-12mm. 10-16 mm. Strength: Stiff and strong. Stiff and strong. Stiff andstrong. Color: Mature: RHS Yellow-green. Yellow-green. Yellow-green146B. Immature: RHS Yellow-green 146C. Leaves Color mature RHSYellow-green Dark-green. Dark-green. upper side: Underside: 147A. RHSGrayed-green 191A. Peduncle RHS Yellow-green Yellow-green Yellow-green.Color mature: 146A. Brown at sun Sun exposed parts exposed parts. willget some brownish as dark as RHS Brown 200C. Color of ray Third nearbase: Red-purple. Light Purple- florets RHS White 155C violet. Upperside: Two third near apex: RHS Violet 84B.

Of the many commercial cultivars known to the present inventor, the mostsimilar in comparison to the new Dahlia ‘DATREOGTYVE’ is the Dahliacultivar ‘DAELLEVE’(Patented, U.S. Plant Pat. No. 19,184) in thecharacteristics described in Table 2:

TABLE 2 Comparison with Comparison Variety New Cultivar New CultivarComparison ‘DATREOGTYVE’ ‘DAENOGTYVE’ Cultivar Trait 6653E 6653P(sister) ‘DAELLEVE’ Plant Size Height: About 40-50 cm. About 35-45 cm.About 40-45 cm. Diameter: About 45-50 cm. About 45-50 cm. About 40-45cm. Overall Plant Upright to spreading Upright to Cylindrical, a Shape:with basal spreading with little spreading, branching. basal branching.with basal Inflorescences in Inflorescences in branching. compositeheads. composite heads. Inflorescences in composite heads. Basalbranches with flowers Length: 35-45 cm. 30-40 cm. 25-40 cm. Diameter:12-16 mm 12-16 mm 8-12 mm Strength: Stiff and strong. Stiff and strong.Stiff and strong. Color: Mature: RHS Mature: RHS RHS Brown Yellow-green146B. Yellow-green 200B. Immature: RHS 146B. Yellow-green 146C.Immature: RHS Yellow-green 146C. Leaves Colour mature RHS Yellow-greenRHS Yellow-green RHS Green upper side: 147A. 147A. 139A. Underside: RHSGrayed-green RHS Grayed-green RHS Grayed- 191A. 191A. green 191B.Peduncle Colour RHS Yellow-green RHS Yellow-green RHS Brown mature:146A. 144A. 200B Colour Sun exposed parts RHS Yellow-green RHS 146Bimmature: will get some 144A. brownish as dark as RHS Brown 200C. Colorof ray Third near base: White near base to Base: Purple florets UpperRHS White 155C RHS Red-purple 67A. side: Two third near apex: N74A. Tip:Red-purple RHS Violet 84B. The amount of 62D. white on ray floretdiffers from 20- 50% (a few even 80%).

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs illustrate the overall appearance of thenew Dahlia ‘DATREOGTYVE’ showing the colors as true as is reasonablypossible with colored reproductions of this type. Colors in thephotographs may differ slightly from the color value cited in thedetailed botanical description, which accurately describe the color of‘DATREOGTYVE’.

FIG. 1 shows a close-up view of the composite flower head from‘DATREOGTYVE’.

FIG. 2 shows a side view perspective of a typical flowering plant of‘DATREOGTYVE’ in a 19 cm pot, at 8 weeks of age after potting the youngplant.

FIG. 3 shows a close-up view of different development stages of thecomposite flower head of ‘DATREOGTYVE’.

FIG. 4 shows a close-up view of the 150-180 ray florets from onecomposite flower head of ‘DATREOGTYVE’

FIGS. 5 and 6 show a close-up view of the different compound and singleleaf sizes of ‘DATREOGTYVE’.

FIG. 7 shows a comparison between ‘DAELLEVE’, ‘DATREOGTYVE’ (Breedersreference: 6653E) and ‘DAENOGTYVE’, (Breeders reference: 6653P).

DETAILED BOTANICAL DESCRIPTION

The new Dahlia ‘DATREOGTYVE’ has not been observed under all possibleenvironmental conditions. The phenotype of the new cultivar may varywith variations in environment such as temperature, light intensity, andday length without any change in the genotype of the plant.

The aforementioned photographs, together with the followingobservations, measurements and values describe the new Dahlia‘DATREOGTYVE’ as grown in a protected environment in a glass, greenhousein Fyn, Odense, Denmark, under conditions which closely approximatethose generally used in commercial practice. During propagation,conducted in a glasshouse, vegetative cuttings were planted 6 Jul. 2011in small propagation pots with peat as substrate, and then placed in aplastic tunnel averaging about 21° C. and received photoperiodictreatments of 18 hours. Supplementary light was given when natural lightfell below 3000-4000 Lux. Rooting occurred about 12 days after planting.In third week after planting the cutting (27 Jul. 2011), young plantswere potted in an 19 cm pot in a glass covered greenhouse, maintained at18° C. to 26° C. during the day, and at 17° C. to 19° C. during thenight. Plants were grown under natural daylight conditions. Irrigationwas done with water. The EC measured in the soil was maintained between2.0 to 3.0. One week after potting, the first growth regulation wasgiven: a spray with 85% daminozide, 0.2%, 40-100 m1/m2. During theproduction time, 9 additional sprayings were given with 85% daminozide,0.2%, 40-100 m1/m2.

Color references are made to The Royal Horticultural Society ColourChart (R.H.S.), 2001 edition, except where general colors of ordinarysignificance are used. Color values were taken under September daylightconditions at approximately 12:00 PM and 2:00 PM in Fyn, Odense,Denmark. The age of the ‘DATREOGTYVE’ plants described is 10-11 weeks(including propagation time).

-   Classification:    -   -   Botanical.—Dahlia Cav.-   Parentage:    -   -   Female or seed parent.—Dahlia designated 5876P.        -   Male or pollen parent.—Dahlia designated 5187C.-   Propagation:    -   -   Type.—Vegetative terminate cuttings.        -   Time and temperature to initiate roots.—About 9 to 12 days            at 21° C. in tunnels or flat covered in a greenhouse.        -   Time and temperature to produce a rooted young plant.—About            21 days at 21° C. during rooting phase, followed by 18° C.        -   Rooting habit.—Fine, fibrous; Color of root: RHS            Yellow-white 158C.        -   Tuber development.—Plants might develop tubers in late fall            when planted outside.-   Plant description:    -   -   General appearance and form.—Upright to slightly spreading            shape. Inflorescences in composite heads.        -   Growth rate.—Growing about 4 to 6 cm per week during            production period.        -   Plant height (from soil level to top of plant plane).—About            40-50 cm.        -   Plant width (spread).—About 45-50 cm.        -   Crop time to produce a mature flowering plant.—It requires 3            to 4 weeks to produce a young plant in a 35 mm propagation            plug. After potting 7 to 11 weeks are required to produce            finished flowering plants in 19 cm pots.-   Stem:    -   -   Shape.—Round.        -   Length (pinched above 3 pair of leaves).—About 4-6 cm.        -   Diameter.—About 14-16 mm.        -   Strength.—Stiff and strong.        -   Aspect.—Upright.        -   Texture.—Fluted woody surface.        -   Color.—RHS Yellow-green 146C turning to RHS Gray-brown 199C.-   Branches:    -   -   Branching habit.—Basal branching with lateral branches.        -   Number of basal branches per plant.—About 3-5 (when pinched            above 3 pair of leaves).        -   Length (including flowers).—About 35-45 cm.        -   Diameter.—About 12-16 mm.        -   Strength.—Stiff and strong.        -   Aspect.—Upright to slightly spreading.        -   Texture.—Smooth and glabrous.        -   Color.—Mature: RHS Yellow-green 146B. Immature: RHS            Yellow-green 146C.        -   Internodes length.—About 15-50 mm.        -   Internodes color.—RHS Yellow-green 146B.-   Foliage description:    -   -   Type.—Compound leaves divided into 2-15 leaflets. Only very            few single leaves present, near peduncle.        -   Number of leaves per branch.—About 8-10 per branch.        -   Color of leaves (leaves and leaflets).—Color of upper side            (mature) RHS 147A. Color of underside (mature) RHS 191A.            Color of upper side (immature) RHS 147A. Color of underside            (immature) RHS 147C.        -   Venation (leaves and leaflets).—Pattern: Pinnate. Color of            upper side: RHS 146A. Color of underside: RHS 146B.-   Compound leaves:    -   -   Number of leaflets per compound leaf.—2-15.        -   Length of compound leaf.—10-28 cm.        -   Width of compound leaf.—10-25 cm.        -   Petiole of compound leaves.—Shape: Semi circular, with deep            furrow on adaxial side. Length: 4-8 cm. Diameter: 4-10 mm.            Texture: Smooth and glabrous. Color: RHS Yellow-green 146B            to RHS Yellow-green 147A.        -   Leaflets of compound leaf.—Terminal leaflet quantity: 1.            Terminal leaflet length: 6-18 cm. Terminal leaflet width:            5-9 cm. Terminal leaflet shape: Ovate. Terminal leaflet            shape at apex: Acuminate. Terminal leaflet shape at base:            Cordate to rounded (not always symmetric). Terminal leaflet            margin: Dentate. Terminal leaflet texture (both sides):            Rugose. Rachis length: 1-10 cm. Rachis Diameter: 2-5 mm.            Rachis color: Upper side: RHS Yellow-green 147A. Under side:            RHS Yellow-green 146B. Lateral leaflet quantity: 1-14.            Lateral leaflet length: 3-14 cm. Lateral leaflet width:            3-8 cm. Lateral leaflet overall shape: Ovate. Lateral            leaflet shape at apex: Acuminate (not always symmetric.)            Lateral leaflet shape at base: Rounded (not always            symmetric). Lateral leaflet margin: Dentate. Lateral leaflet            texture (both sides): Rugose.-   Simple leaves: Only small leaves near the composit flower heads.    -   -   Simple leaves overall shape.—Ovate.        -   Simple leaves shape at apex.—Acute.        -   Simple leaves shape at base.—Rounded.        -   Simple leaves length.—6-8 cm.        -   Simple leaves width.—4-6 cm.        -   Simple leaves margin.—Dentate.        -   Simple leaves texture.—Rugose.        -   Petiole shape.—Semi circular, with deep furrow on adaxial            side.        -   Petiole length.—0-1 cm.        -   Petiole diameter.—3-5 mm.        -   Petiole texture.—Smooth and glabrous.        -   Petiole color.—RHS Yellow-green 146B to RHS Yellow-green            146C.-   Inflorescence description:    -   -   Natural flowering season.—Grown outside as a bedding plant,            flowering occurs continuously during growing season from            spring to autumn/(In Denmark, from June to beginning of            October). Plants can be brought to flower anytime when grown            under the recommended greenhouse conditions.        -   Time to flower.—50 to 80 days from potting a young plant            until flowering.        -   Inflorescence longevity on the plant.—Inflorescence will            maintain good color and substance for about 6-10 days;            however, the longevity of individual inflorescence is highly            dependent on temperature and light conditions. Inflorescence            persistent.        -   Type.—Composite flower heads.        -   Arrangement and shape.—Persistent, single, composite            inflorescences from leaf axils. Disc and ray florets            arranged acropetally in a composite flower head. Upright,            slightly spreading. Terminal young flower head/buds            initially 70-90°. Buds from axillary shoots 70-90°. When            flower opens 30-70°.        -   Quantity of inflorescences heads.—Freely flowering; about 22            buds and open inflorescences per plant.        -   Fragrance.—None.        -   Bud (inflorescences head).—        -   Rate of opening (from showing color to fully open).—4 to 10            days. The rate of opening is highly dependent on temperature            and light conditions. Length: About 12-16 mm. Diameter:            About 20-24 mm. Shape: Flat globular. Texture: Glabrous,            shining. Color: RHS Yellow-green 144A to Yellow-green N144A            before opening.        -   Peduncle.—From both terminate and axillary shoots. Length:            About 15-22 cm. Diameter: About 4-6 mm. Angle: About 0-20°            from vertical. Strength: Stiff and strong. Texture:            Glabrous. Color (mature/immature): RHS Yellow-green 146A.            Sun exposed parts will get some brownish as dark as RHS            Brown 200C.        -   Inflorescence head.—Depth (height): 5-7 cm. Diameter: 9-11            cm.        -   Ray florets.—Arrangement: Imbricate, in about 11 to 13            whorls of ray florets, each with 12 to 17 florets to equal a            total of about 150-180 ray florets per flower head,            depending on light and temperature conditions. Quantity per            Inflorescence head: 150-180. Length: 45-50 mm. Widths:            24-28 mm. Overall shape: Obovate. Apex shape: Obtuse. Base            shape: Acuminate, fused. Margin: Entire. Texture: Upper            side: Glabrous. Under side: Pubescent (small and few).            Colour when opening fused ray floret starting to show color:            RHS Purple-violet N81B. Colour when fully opened Color upper            side: Third near base: RHS White 155C. Two third near apex:            RHS Violet 84B. Color underside: RHS Violet 84B, with RHS            White 155C stripes along veins.        -   Disc florets.—Arrangement: 60-75 yellow-orange disc florets            arranged in center of inflorescence head. Apperance:            Quantity per Inflorescence head: 60-75. Length: 7-10 mm.            Diameter: 2 mm. Overall shape: Tubular. Apex shape: Star            with 5 triangular tips. Base shape: Fused to tube. Color RHS            Yellow-orange 21A.        -   Phyllary.—Arrangement: One subtending each floret. Quantity:            210-255. Length: 12-24 mm. Width: 6-10 mm. Overall shape:            Rounded. Shape at apex: Acute with rounded tip. Shape at            base: Fused. Margin: Entire. Color: Mature: RHS Yellow-green            151C. RHS Yellow-green 146A on underside near base of the            phyllaries in the outer whorl, Color: Immature: RHS            Yellow-green 151C.        -   Brachts.—Arrangement and appearance: Reflexed, involucral            bracts. Quantity: 7-8. Length: 16-20 mm. Width: 8-10 mm.            Overall shape: Subulate. Apex shape: Acute. Base shape:            Sessile. Margin: Entire. Texture: Glabrous. Colour mature            Upper side: RHS 137B. Underside: RHS 137C. Colour immature            Upper side: RHS 137B. Underside: RHS 137C.-   Reproductive organs:    -   -   Androecium.—Location: Disc florets only. Stamen number: 5,            fused into synandrous tube around style. Stamen length:            About 5-7 mm. Anther shape: Tubular. Anther length: About            2-4 mm. Pollen amount: Some. Pollen color: RHS N25C.        -   Gynoecium.—Poorly developed and not present on all flowers.            Location: Ray and disc florets. Quantity: Up to 1. Pistil            length: 7-8 mm. Stigma shape: Bifurcate. Stigma length:            About 2 mm. Stigma color: Not visible due to the cover of            pollen brushed of the anthers. It then appears RHS N25C.            Style length: About 3 mm. Style color: RHS 151C. Ovary            color: RHS 151C.-   Seed/fruit: Seed and fruit production has not been observed.-   Disease/pest resistance: Resistance to pathogens and pests common to    Dahlia has not been observed.-   Disease/pest susceptibility: Susceptibility to pathogens and pests    common to Dahlia has not been observed.-   Temperature tolerance: Plants of the new Dahlia have exhibited good    tolerance rain, wind and drought; however, flowering may cease    during hot periods (temperatures above 25° C.). Low temperature    tolerance to 1° C.-   Growth regulators: Daminozide (85% water soluble dryconcentrate    formulation).

What is claimed is:
 1. A new and distinct cultivar of Dahlia plant named‘DATREOGTYVE’, as illustrated and described herein.